Neutral pion production at midrapidity in pp and Pb-Pb collisions at $\sqrt{s_{\mathrm{N}\mathrm{N}}}$ = 2.76 TeV

Invariant yields of neutral pions at midrapidity in the transverse momentum range $0.6<p_T<12GeV\mathrm{/}c$ measured in Pb-Pb collisions at $\sqrt{s_{\rm NN}} = 2.76$ TeV are presented for six centrality classes. The pp reference spectrum was measured in the range $0.4<p_T<10GeV\mathrm{/}c$ at the same center-of-mass energy. The nuclear modification factor, $R_{\mathrm{A}\mathrm{A}}$, shows a suppression of neutral pions in central Pb-Pb collisions by a factor of up to about $8-10$ for $5\lesssim p_T\lesssim 7GeV\mathrm{/}c$. The presented measurements are compared with results at lower center-of-mass energies and with theoretical calculations.